They cancelled Star Trek again. Only this time, they did it as the show was getting better, not worse.
The TrekToday article indicates that it was CBS president Les Moonves that made the decision, so I think it's fair to blame them. It's also interesting to note that both times Star Trek has been cancelled (as opposed to the series simply ending after seven years), CBS did it.
This may not be all bad, though. New episodes could be produced in syndication, like The Next Generation and Deep Space Nine. Or perhaps on SciFi (or another cable channel).
Though perhaps the best thing for Star Trek is to give it a few years off. No TV, no movies. Get rid of Berman; I'd much rather see Manny Coto take over, and lanuch a new series in about five years.
Live long and prosper, Captain Archer.